00:02
So in humans, we know that humans have 23 pairs of chromosomes.
00:12
Now, there are 22 pairs of autosomes present in it and one pair of sex chromosomes present.
00:21
So in case of females, so in human females, there are 22 pairs of autosomes plus the two sex chromosomes.
00:33
Chromosomes are x and x.
00:36
So females have both the same sex chromosomes.
00:39
In case of males on the other hand, so in human males, there are again 22 autosomes just like the females, but they have different sex chromosomes that is x and y.
00:53
So the sex chromosomes in males and females is different.
00:57
So now to balance out.
01:01
So we see that males have only.
01:03
One x chromosome.
01:05
On the other hand, females have two x chromosomes.
01:09
So in this case, if females have two x chromosomes, therefore, the gene expression of the chromosomes.
01:16
So x x chromosomes will have double gene expression as compared to xy, which is present in males.
01:30
So if this both the x chromosomes are expressed in case of females, then the there will be a double gene expression.
01:39
So we don't want that...